cve-2024-21980-poc

SEV ファームウェア脆弱性 このリポジトリには、SEV ファームウェアの脆弱性を悪用するエクスプロイトが含まれています。このエクスプロイトにより、廃止された SEV-SNP ゲストの任意のメモリを復号化できます。 バージョン 1.55.16 執筆時点での最新 でテスト済み。 根本原因 SEV ファームウェアには、masterhandlertable と呼ばれるテーブルがあり、すべてのコマンドの関数ポインタと、コマンドに関連するいくつかの追加プロパティが含まれています。これらの追加プロパティのうち2つは、cmdbuftype と snpcmdbufenforcement...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: x86/virt/sev: Revert “Drop WBINVD before setting MSRAMD64SYSCFGSNPEN” Revert 99cf1fb58e68 “x86/virt/sev: Drop WBINVD before setting MSRAMD64SYSCFGSNPEN”. Section 8.8 of the SNP specification states: Before invoking SNPINITEX with...

SUSE CVE-2026-72239

In the Linux kernel, the following vulnerability has been resolved: x86/virt/sev: Revert "Drop WBINVD before setting MSRAMD64SYSCFGSNPEN" Revert 99cf1fb58e68 "x86/virt/sev: Drop WBINVD before setting MSRAMD64SYSCFGSNPEN". Section 8.8 of the SNP spec says: Before invoking SNPINITEX with INITRMP se...

CVE-2026-72239

In the Linux kernel, the following vulnerability has been resolved: x86/virt/sev: Revert "Drop WBINVD before setting MSRAMD64SYSCFGSNPEN" Revert 99cf1fb58e68 "x86/virt/sev: Drop WBINVD before setting MSRAMD64SYSCFGSNPEN". Section 8.8 of the SNP spec says: Before invoking SNPINITEX with INITRMP se...

UBUNTU-CVE-2026-72239

In the Linux kernel, the following vulnerability has been resolved: x86/virt/sev: Revert "Drop WBINVD before setting MSRAMD64SYSCFGSNPEN" Revert 99cf1fb58e68 "x86/virt/sev: Drop WBINVD before setting MSRAMD64SYSCFGSNPEN". Section 8.8 of the SNP spec says: Before invoking SNPINITEX with INITRMP se...

EUVD-2026-59138

In the Linux kernel, the following vulnerability has been resolved: x86/virt/sev: Revert "Drop WBINVD before setting MSRAMD64SYSCFGSNPEN" Revert 99cf1fb58e68 "x86/virt/sev: Drop WBINVD before setting MSRAMD64SYSCFGSNPEN". Section 8.8 of the SNP spec says: Before invoking SNPINITEX with INITRMP se...

CVE-2026-72239

The provided documents describe CVE-2026-72239 as a Linux kernel issue in x86/virt/sev related to SNP (Secure Encrypted Virtualization) handling. The root cause is a prior change: dropping WBINVD before setting MSR_AMD64_SYSCFG_SNP_EN, which is reverted. The SNP specification requires flushing di...

CVE-2026-72239 x86/virt/sev: Revert "Drop WBINVD before setting MSR_AMD64_SYSCFG_SNP_EN"

In the Linux kernel, the following vulnerability has been resolved: x86/virt/sev: Revert "Drop WBINVD before setting MSRAMD64SYSCFGSNPEN" Revert 99cf1fb58e68 "x86/virt/sev: Drop WBINVD before setting MSRAMD64SYSCFGSNPEN". Section 8.8 of the SNP spec says: Before invoking SNPINITEX with INITRMP se...

CVE-2026-72239 x86/virt/sev: Revert "Drop WBINVD before setting MSR_AMD64_SYSCFG_SNP_EN"

In the Linux kernel, the following vulnerability has been resolved: x86/virt/sev: Revert "Drop WBINVD before setting MSRAMD64SYSCFGSNPEN" Revert 99cf1fb58e68 "x86/virt/sev: Drop WBINVD before setting MSRAMD64SYSCFGSNPEN". Section 8.8 of the SNP spec says: Before invoking SNPINITEX with INITRMP se...

PT-2026-72427

In the Linux kernel, the following vulnerability has been resolved: x86/virt/sev: Revert "Drop WBINVD before setting MSR AMD64 SYSCFG SNP EN" Revert 99cf1fb58e68 "x86/virt/sev: Drop WBINVD before setting MSR AMD64 SYSCFG SNP EN". Section 8.8 of the SNP spec says: Before invoking SNP INIT EX with...